11. g3g4 Otherwise Black simply plays f7-f5. 11... e7g6 This leads to a very dangerous position for Black after Firouzja's next move. 12. h3h4 A great move by a tactical magician in his element. 12... g5h4 Black's position goes downhill very fast after this. 13. g4g5 This is the point. White threatens to take on h6 and if Black captures on g5, a dangerous knight will go to this square.